Adjustable snowplow shoe



NOV- 8', 1932 A. J. DoMBRowsKl ADJUSTABLE SNOWPLOW SHOE Filed July 12, 1932 elwwnug,

Patented Nov. 8, 19324` i f UNITED STATES PATENT oFFlc-E i ALEXANDER J. DoMBRowsKI, or N'nsnioao, WISCONSIN ADJUSTABLE sNoWPLow sHoE Application mea July 12, 1932. sern No. 622,124.:

This. invention relates to Vcertain new and useful improvements inadjustable snow plow fsh'oes.

. The primary kobject of the invention is `to Vprovide an `adjustable snow plowV shoe wherein the ground engaging skid portion `Hof the shoe is adjustable relative Vto a carry- L ing section to compensate for wear on the Vshoe with the adjustmentaccomplished in a vminimum of time Vand labor with the shoe.

`construction and adjusting elements of `a character whereby the ground engaging portion of the shoe is rigidly maintained in adjusted position againstaccidental displacev'15 ment with the .entire adjustment accomplished without the necessity of removing the shoe from' the plow. .Y l f j i Withthe aboveand other objects inview that willbecome apparent as the nature-of the invention is Vbetter. understood, thesame Vconsistsin the Anovel form, Y combination and- 'ectino below acarr lino' section or backing` e n l l n member;` i

Figure 3 is a vertical longitudinal sectional View taken on line 3-'.3` of Figure 1, show-4V ing the screw operated cam devices to effect adjusting movement-of the ground engaging portion ofthe shoewith the anchor bolt for Y attaching the shoe to the plow having the heads thereof countersul'ik in the backing ofV the shoe;

Figure Ll-lsa cross-sectional View taken- `Online L-Llof Figure 2; and Y Figure 5 is a detail sectional view Vshowing .another form of bolt connection between the A shoe and plow. Y Y Y l Referring more in detail to the accompany- Y ing drawing, there, is illustrated a snow plow shoe comprising a backing 10 and a ground.

lengaging shoe portion 11. The backing 10 is of casing-like formation having a top wall 12, depending Aside walls13 and end walls 14. 'Y Bolts 1 5 for anchoringthe shoe to the plow have the heads 16 .thereof counter-sunk Ain 'l l .j the top wall ofthe backing with the lower n endsof the heads v16 flush with thebottom 55 face ofthe top wall; 12'asfshown in Figure 3.A

The shoe 11 comprises an elongated block 17 neatly fitting vwithin the depending side and end vwallsof the backing member 10 for sliding vadjustmenttherein and having its lower grounohengaging edge 18 projecting below-*the Vside andfend walls ofthe backing. The ground engagingvlshoe 11 is retained` in `the backing 10 means of transversely eX- i tending screw ybolts 19freely passing through 65 l openings 20 in the shoe-,17 and also through the verticallyextending. slots 21 in the side f' walls 13 of the backing, the ground engaging shoe 177 being retained inV vertically adjusted positions relative to the backing 10 bymeansl. .70, of washers-22 and nuts 23jassociated with the screw bolts19 as shown in the several figures.

The adjustment` of the ground engaging Y shoe v17 for movement outwardly of the backlng lOto compensate vfor wear is .accomplishedby screw operated cam devices 'con-v sisting of a screw shaftf21 extending through the cut-out portion 25 in the upper end of the `ground engaging shoe 17 having opposite ends thereof oppositely threaded asat 26 80 l and freely passing through openings in the end walls 14 of the backing with ahead 'and washerV combination 27 vupon one 'end of the screw shaft24 while the other endof the screw shaft carries a'key extension V28 to 85V receive a tool to effect manipulation thereof and also ak jamb nut 29' to holdvthe screw shaft against rotation. The upper face ofV ground engaging shoe 17 at each end thereof Y is provided withv an inclined cam'facev 30 90 engaged by a cam block 31 threaded upon the adjacent threaded end26 ofthescrew shaft 24 as shown 1n Figure 3 so that when the jamb nut 29 is released from engaging with Y Y the adjacent end -wall ,14: of thebackingand 95,

a -tool or other implement applied tothe key f end 28; of the'screw shaft 24, the latterV is rotated for moving the cam blocks 31 toward each other over the .cam `surfaces 31 ofthe ground engaging shoe toweffect lowering Y ment has been accomplished, the nuts 23 are again tightened for holding the ground en- Y gaging shoe in its adjusted position.

The bolts 15 for attaching the shoe tothe snow plow have been illustrated and described in Figures 1 to 4 as having the heads 16 thereof counter-sunk in the top wall 12` of the backing while another form of bolt mounting isillustrated in Figure 5. The

Y top wall 12 of the backing as showng in Figure 5 has a relatively small plate section 32 welded or otherwise secured'thereto as at 33 with 'the `head 16a ofthe bolt 15a counter-sunk iii the plate 82. In the event of breakage of the bolts 15a, it would only be necessary to remove the plate -32 from the backing plate 12without disturbing the operating devices for the ground engaging shoe 17, a new anchor bolt and attaching plate being substituted in a minimum of time.

` From the above detailed description of the Minvention, it is believed'that the construction and operation thereof will at once beV apparent, and while there are herein shown and described the preferred embodiments of the invention, it is nevertheless to be understood thatminor changesmay be made therein without departing from the spirit and i Ascope of the invention as claimed.

I claim :w-

. ing, a ground engaging shoe adjustable therein and means for adjusting the shoe relative to the backing including a screw shaft, cam

blocks thereon and cam faces oiiV the shoe engageable by the blocks to effect movements ofthe sho-e outwardly of the backing.

2. In an adjustable snow plow shoe, a backing, a ground engaging shoe adjustable thererin, means for adjustingth-e lshoe relative to the backing including a screw shaft, cam;- blocks thereon and cam faces on the shoe en-V i gageable by the blocks to effect movements of i so j the shoe outwardly of the backing, and transversely extending bolts carried by the ground engaging shoe for anchoring the latter in adjusted position to the backing.

' 3. In an adjustable snow plow shoe, a backing, a ground engaging shoe adjustable therein, means for-adjusting Ythe shoe relative to i the backing vincluding a screw shaft, cam

locks thereon and cam faces on the shoe en- 'gagea'ble by the blocks to effect movements of4 the shoe outwardly of the backing, and bolts- 1. In an adjustable snowvplow shoe, a back-v Vgageable by the blocks to effect movements of the shoe outwardly ofthe backing, transversely extending bolts carried by the ground engaging slice for anchoring the latter in adjustedposition to the backing, and bolts carv ried by the top of the backing for securing the shoe to a snow plow.

5. In an adjustable snow plow shoe, abacking, a ground engaging shoe adjustable-therein, meansforadju'stingthe sho-e relativevr to the backing including a screw shaft, j cam blocks thereon andv cam faces on the shoe engageableby the blocksto effect movements of?, the shoe outwardlyof the backing, bolts carried by the top of the backing for securing the shoe to a snow plow, the connection-between tlie last Ynamed bolts and backing includiiig plates-secured to the top of the back-@.190 ing with the'heads of the boltscountersunk in the plates abovetlieltop of the backing.

l 6. In an'adjustable snow plow shoe, a backing, a ground engaging shoe adjustable therein, means for adjusting the shoe relative 1305,95

the backing including a screw shaft, -cam blocks thereon and cam faces on the shoe en- -gageable by the blocks to-effect movements of the shoe outwardly of the backing, transversely extending bolts carried by the groundgoo engaging shoe for anchoring the latter in adjusted positionvto the backing, bolts carried byl the rtop of the backing for securing the shoe to a snow plow, the connection between the last named bolts and backing including.; plates lsecured to the tcp of the backing'fwith the heads of the bolts countersunk in the plates above the top of the backing. Y

V'7.' In an adjustable snow plow shoe, a backing, a ground engaging shoe adjustable there- @110 in, means for adjusting the shoe relative to the backing including a screw shaft, cam blocks thereon and cam faces on the shoe engageable by the blocks to effect movements of the shoe outwardly of the backing, the back- .2115 ing including a top wall, end walls and side walls with the ground' engaging shoe confined withinv the walls, and said screwshaft Vextending through the end walls and disposed above the ground engaging shoe. Y ts-120 8. In an adjustable snow plow shoe, a backing, a ground engaging shoe adjustablethere- Vin',means for adjusting the shoe relative to the backing including a screw shaft, cam blocks thereon and cam faces on'the shoeen gageable by the blocks to effect movements of the shoe outwardly of the backing, transversely'extending bolts carried by the ground engaging shoe for anchoringthe latter in adjusted position to the backing, the backingl30 including a top wall, end walls and side walls with the ground engaging shoe confined Within the Walls, and said screw shaft extending through the end Walls and disposed above the ground engaging shoe.

In testimony whereof I ax my signature.y

ALEXANDER J. DOMBROWSKI. 

